3980440

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{521}}^1$

素因数の和:723

約数の個数: 32

約数和(自身を含む): 9020160

約数和(自身を除く): 5039720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 521, 764, 955, 1042, 1528, 1910, 2084, 2605, 3820, 4168, 5210, 7640, 10420, 20840, 99511, 199022, 398044, 497555, 796088, 995110, 1990220, 3980440]

約数ペア:

[(1, 3980440), (2, 1990220), (4, 995110), (5, 796088), (8, 497555), (10, 398044), (20, 199022), (40, 99511), (191, 20840), (382, 10420), (521, 7640), (764, 5210), (955, 4168), (1042, 3820), (1528, 2605), (1910, 2084)]